package homework.api03.exercises02;

import javax.swing.plaf.basic.BasicInternalFrameTitlePane;
import java.util.ArrayList;
import java.util.Collection;
import java.util.HashSet;

public interface CollectionDemo {
    public static void main(String[] args) {

        //Collection c = new HashSet();
        Collection c = new ArrayList();
        c.add(new Point(1,2));
        c.add(new Point(3,4));
        c.add(new Point(5,6));
        c.add(new Point(7,8));
        c.add(new Point(9,0));
        boolean b = c.add(new Point(1,2));
        System.out.println(b);//true

        System.out.println(c);//[(1,2), (3,4), (5,6), (7,8), (9,0), (1,2)]

        Point p = new Point(1, 2);
        boolean contains = c.contains(p);
        System.out.println("是否包含:"+contains);

        boolean remove = c.remove(p);
        System.out.println("是否删除:"+remove);



    }
}
